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How to do A/C Relay Actuator Test on Sany C8 with X431 PAD5

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 This guide provides a straightforward walkthrough for performing an A/C Relay Actuator Test on a 2020 Sany C8 using the Launch X431 PAD5 Elite . This diagnostic procedure is essential for verifying relay functionality and troubleshooting climate control issues in heavy-duty machinery. Prerequisites for Testing Before starting the test, ensure the following conditions are met to avoid execution failure: Ignition Status: T15 must be powered on. Engine State: Engine speed must be 0 RPM. Vehicle Movement: Vehicle speed must be 0 km/h. Duration: The test will automatically stop after 30 seconds. Step-by-Step Operation Guide Step 1: Vehicle Selection Navigate to Local Diagnose >> Construction >> Sany Tap OK to enter the diagnostic menu. Step 2: System Identification Go to Engine System >> Weichai Engine >> Automatic recognition >> Weichai engine automatic recognition >> WISEC10-P201-V174 Click OK to confirm vehicle information....

LAUNCH X431 PAD: Gearbox Clutch Learning on UD CG5 truck

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 This article will describe how to use the LAUNCH X431 Truck Diagnostic Tool ( X431 PAD V HD ) to perform Gearbox Clutch Learning on a Nissan UD CG5 truck (Volvo system). What is clutch learning in a transmission? In truck transmissions, "clutch learning" typically refers to the self-learning process in an AMT (Automated Manual Transmission) system. This process is used to calibrate parameters such as the clutch’s engagement point and friction point to ensure smooth gear shifting. When is it necessary to perform the transmission clutch learning function? This operation is generally performed after replacing clutch-related components (such as friction plates, TCU, etc.). For example: Replacing clutch friction plates, pressure plates, release bearings, etc.; Replacing the TCU or performing related repairs; After the vehicle experiences noticeable shifting jerks and other faults have been ruled out. How to execute the transmission clutch learning function? Th...

LAUNCH X431 Truck Diagnostic Software Update (April, 2026)

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 LAUNCH X431 Truck Diagnostic Software Update Information (April, 2026). The detailed upgrade content is as follows: HD_KNORR V10.30 Added basic function, actuation test and special function for KNORR TEBS4 CAN system; Added special function for some version of KNORR TPMS and TEBS4 K system; Fixed unknown software issue. SCANIA V16.20 New add thirty-five special functions.New add TCO, AMS2 Data stream. Optimized and fixed some problems. EV_HD_GEELY V10.80 Added the diagnostic function for LCV/ XingXiang V7EV8E(N72 Facet). DELPHI V12.70 Added Dongfeng Delphi Ruiqi M9T, Changcheng Delphi DCM7.24; Optimized Active Test and Special Function. HD_CATERPILLAR V12.50 Added Features such as Manual Aftertreatment Regeneration Procedure and Vibratory System Test; Fixed Some Known Issues. HD_DETROIT V12.90 Added parameter menu and some special features. WP_DIESEL V12.80 Added Weichai Self Developed WISE10E, Weichai Self Developed WISE10D, Weichai Self Developed ...

LAUNCH X431 CAN FD Connector & DoIP Adapter Support List

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 The LAUNCH X431 CAN FD Connector is a high-speed diagnostic adapter designed to support vehicles using the CAN FD and DoIP protocols. It enables professional diagnostic tools, such as the LAUNCH X431 and CRP Series , to communicate with the latest automotive systems that traditional OBDII interfaces cannot access. Why You Need the CAN FD Adapter As automotive manufacturers transition to faster data communication, the CAN FD protocol has become the standard for new models. This adapter is required to: Enable CAN FD Support : Access high-speed data rates on compatible models like the GM 2024 series and Golf 8. Support DoIP Protocols: Perform deep diagnostics on BMW (F/G/I/U chassis), Mercedes-Benz (S/C/E Class), and Land Rover. Expand Tool Compatibility: Connect seamlessly with LAUNCH X431 tablets and CRP series handheld scanners. Vehicle Support List The LAUNCH CAN FD Connector covers a wide range of global brands and modern architectures.   BMW - F ...

LAUNCH X431 PAD: Suspension Height Sensor Reset for GMC Yukon

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 This article will describe how to perform suspension height sensor calibration on a 2015 GMC Yukon using the LAUNCH X431 PAD tool . Function Description: The suspension height sensor (vehicle height sensor) functions to adjust the air suspension height or headlight height in real time. The sensor is mounted externally to the vehicle, monitors suspension compression and rebound, and sends the data back to the ECU, which in turn activates the air suspension compressor to adjust the vehicle height. After replacing or physically adjusting the suspension height sensor, it is usually necessary to use a vehicle diagnostic tool (such as the LAUNCH X431 diagnostic tool ) to perform the "Suspension Position Sensor Trim Height" function. Tested Model: 2015 — GMC — Yukon Equipment used in this test : LAUNCH X431 PAD IX Devices supporting this function : X431 full range of diagnostic tools (including X431 PRO series, PRO3 series, PAD series, CRP919 series). Operating proc...

LAUNCH X431 IMMO Elite/Plus Guide: Adding a New BMW CAS3 Key

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 Programming a BMW CAS3/CAS3+ key is straightforward when using professional tools like the LAUNCH X431 IMMO Elite or IMMO Plus . This guide provides a streamlined workflow to generate and match keys efficiently. Preparation & Hardware Connection To begin, ensure your diagnostic connector and the Launch-X431 IMMO tablet are connected simultaneously to the vehicle. Generate Remote: Navigate to Key programmer > vehicle remote > BMW > All remotes > Generate. Access IMMO Menu: Select BMW on the main diagnostic screen and enter the Anti-theft key matching menu. Step 1: Backup CAS Key Data Before performing any key learning, it is critical to back up the original CAS data. Navigate to: CAS3/CAS3+ IMMO > Key Operation > Key Data Operation > Backup Key Data. Follow the on-screen prompts: Remove the key from the ignition (or place smart keys outside the vehicle). Click Backup to save the data file securely. Step 2: Key Learning & Generat...

LAUNCH CRP12X Update Adds PROTON and PERODUA

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  The LAUNCH CRP12X series now includes PROTON and PERODUA software , which can be obtained through software upgrades. Compatible devices: Creader 123X V3 Creader 129X V3 Creader 123I V3 Creader 129I V3 Creader 123E V3 Creader 129E V3 Creader 129X PLUS V3 Creader 129E PLUS V3 The CRP series diagnostic tools listed above can be upgraded to the latest software free of charge to provide support for PROTON and PERODUA vehicles.